Wire-feed mechanism



Nov. 16 .1926.

A. A; GRISWOLJZ) 5:1" m

WIRE FEED MEGHMZEC vi Original F iled Mav 17, 1922 4 Shuts-Sheet 1 firmware-Y NWv y, "2,5014% 1 ("5 HIS Nfi-"CJLE 5% WIRE FEED MECHANISM Original Filed Mav 17, 1922 4 Sheets-Sheet 2 INYEN Z'UHS ATJ'UHNE Y Nov. 16 I926. 1,607,455

A. A. GRISWOLD ET AL WIRE FEED MECHANISM Original fined Mav 17, 1922 4 Sheets-Sheet 5 NVENTEHE Nov. 16 1926.

A. A. GRISWOLD ET AL WIRE FEED MECHANISM Original Filed Mav 1.1, 1922 4 Sheets-Shoot 4 Arr-must Patented Nov. 16, 1926.

UN [TED STATES PATENT OF F I C ALBERT ABBE GRISWOLD, or PROVIDENCE, RHonE isimmi AND ALVIN CARROLL GODDARD; OF RICHMOND HILL, NEW YORK; SAID GODDARD ASSIGNOR, BY MESH-E ASSIGNMENTS, 'ro JOHN Fmuvors CHEVALIER; or B ooKLINE; MASSACHUSETTS.

WIRE-FEED momma;

Original application filed my 17, 1922, seriai'nb. seo'j isiif niv'iae'dlana this application fiie'driar'cii i0, 1924; Serial no; 698%13'21 Our present application is adivisional application divided from our United States ment in a- Wire feeding mechanism as applied to a machine for inserting a fastening Wire into a flexible shingle thereby form ing on a flexible shingle means for liold ing. down the otherwise free end of the shingle, such means being the same asshovvn in United States Patent No; 1,274,410,

granted August 6, 1918' to Albert Abbe Griswold, one of the'present joint inventors.'-

The object of our invention isto improve the construction of aflexible shingle vv'ir ing machine, whereby on depression of a foot treadle the machine will feed a pre-' determined length of Wire into themachine and simultaneously straighten the Wire;-

Our invention consists in the peculiar and novel construction of a flexible shingle WlI- ing machine and more particularly to aniin-' provenient in thewire" feed and straightening mechanism of a flexible shingle- Wiring machine said wire feed and straighten ing mechanism having details of construe tion, as Will be more fully set forthhe'reiii after and claimed.

Figure 1 isa front View of the greater portion of our improved flexible shingle wir ingmachlne;

Figure 2 is a top plan viewof the machine; Figure 3 is' a side View looking at the right-hand side or Wire feed sideof theina chine.

Figure 4: is an enlarged detail vertical; sectional view through the wire feed and" straighteningmechanism, and

Figure!) is a still further enlarged detail; sectional View of that part ofthe Wir'e'feed mechanism that grips and feeds the Wire into the machine.

In the drawings A indicates the frame, B"

driving shaft 1 supported in suitable beaiingsi'n the frame A. On the driving shaft 1 is a loose pulley 2 havingone" half of a.

clutch 3. The other half of the clutch 3 is s lined to the driving shaft 1. A foot treade 4 is pivotally secured to the frame A and-through connecting' rodst; 5; and spring 6 is operatively connected to a clutch operating mechanism which in turn operates the half of the clutch which is splined to'the driving sh'ziftl. The clutch operating mechanism is a Standard V. & 0. Press" 60;, one stroke clutch? mechanism and no claim is made to this clutch operating" inechjanisin; A depression of the foot t'readl' 4', will through the clutch operating nie'ch'a ni'sm= anew the driving mechanism B to 0 e'rate so that the machine Will make one complete operation andstop; for each o era:

50 1; of the foot treadleI Thewvire feed 'mechanisni G jco nsistsof' a 75 connected With a horizontal bar 9 which crank 8 on the driving shaft 1 operatively in turn is piaraiiveiy connected to a ve'i'ti cal lever 10 on the rear'end of a shaft 11' in bearing's 12;12, i-n bracket 13; (m ne Oiithe forward end of-the shaft frame-A2 11 is a verticallever 14 operativel'y con ne'c'ted at its lower endto a slide"15 sliding in ways on a"? hori oiita-l eiitensicn 16 of the frame A: The-slide 15 has a s ring operated arni 17f pivotally connectedto a' lever 18 'on"a vvii'e' grippiiig member 195 which has a Wire gripping 20- and which is pivotally secured to vertical arms on'tlie slide l5, a's' shown iii" Figure v The v ire is gripped between the Wire gripping jaw 20 and? the t opf of' the slide 15,- to feed the Wire 1) into the machine.

ablock 21 and a*-springoperated vire grip ping jaw 22 which allows a f eeiiiivard movement ofthe Wire D and i also prevents a retrograde movement of thewire D. To

Oiii the frame extension 16' to the right of theslide 15'is as right of the slack 2min whammy-sup;

ported in bearings on the frame eirtension lfi is a series of :Wire" straightening rollsT2S:

23' the end of the extension 16 isp'iv ota-lly" secured normally horizontal Wire tension and guide arm 24 having a bent inner stop end 25 and a bifurcated outer end 26 in which is pivotally secured a grooved pulley 27. The Wire D comes from a source of supply, not shown, under the pulley 27, through the straightening rolls 28, 28, under the wire gripping jaws 22 and 20 and then through a hardened steel bushing in the frame A.

The hardened steel bushing referred to forms part of a wire cutting device and has nothing to do with our present invention.

The wire D may be of any required size or shape. It is preferably flat in cross section.

In the operation of the flexible shingle wiring machine having my improved wire feed mechanism, the first downward movement of the foot trcadle *1, by the foot of the operator, the driving mechanism B is brought into operation to close the clutch members on the driving shaft 1 and the pulley 2. The driving shaft 1 now malres one complete revolution and then stops. In this first revolution of the driving shaft 1 the wire feed mechanism C feeds a predetermined length of the wire D into the ma chine.

The operation of my improved wire feed mechanism C is as follows. In each revolution of the driving shaft 1 the crank 8 through the horizontal bar 9, the vertical lever 10, the shaft 11, the vertical lever 14, the slide 15, the arm 17, the lever 18, the wire gripping member 19 and wire gripping jaw 20, operates the slide 15 to draw the slide towards the machine. In this movement of the slide 15 the wire D is gripped between the slide 15 and the gripping jaw 20, as shown in Figure 5, and the wire D is fed into the machine the required length for each revolution of the driving shaft 1. As the wire D is intermittently fed into the machine from a source of supply, not shown, it comes under the grooved pulley 27 then between the straightening rolls 2?), 23, which straightens the wire and the wire then goes between the block 21 and the spring operated wire gripping jaw 22. This wire gripping aw is shaped so as to allow a free passage of the wire into the machine. lVhen the inward movement of the wire stops, the wire gripping jaw 22 automatically grips the wire between the wire gripping jaw 22 and the top of the block 21, which is fast to the frame extension 16, and prevents a retrograde movement of the wire.

Having thus described our invention we claim as new 1. In a wire feed mechanism for a flexible shingle Wiring machine, means for preventing a retrograde movement of the wire comprising a fixed block over which the wire goes, vertical arms on the block a vertical lever pivotally secured to the arms, a wire gripping jaw on the vertical lever and adapted to grip the wire between the jaw and the block, a projecting member on the block, and a spring operatively connected with the projecting member and with the vertical lever.

2. In a wire feed mechanism for a flexible shingle wiring machine, a frame extension adapted to be fixed to the machine frame, said frame extension forming a stop, a normally horizontal arm pivotally secured in the frame extension, said arm having a bent inner end under the frame extension and an outer bifurcated end, a grooved pul ley rotatably secured in the bifurcated end and adapted to guide a wire under the pulley and means for pivotally securing the arm in the frame extension, the bottom of which limits the downward movement of the arm.

In a wire feed mechanism for a flexible shingle wiring machine, a frame extension fixed to the machine frame, slide slidably mounted on the frame extension and having vertical arms, a recess in the slide, a spring element in the recess, an arm operatively connected with the spring element, a wire gripping member pivotally secured to the slide arms and having a wire gripping jaw and an arm pivotally secured to the spring operated arm operatively connected to the spring element in the slide, a vertical lever pivotally secured to the slide and to a bracket on the frame and means for operatively connecting the vertical lever to the driving mechanism of the machine.

4-. In a wire feed mechanism for a flexible shingle wiring machine, the combination of the following instrumentalities, a horizontal frame extension 16, a slide 15 on the frame extension and having a spring operated wire gripping member 19, a vertical lever 14; pivotally secured to the slide and pivotally secured to a bracket on the machine frame, a block 21 on the frame extension and having aspring operated wire grippingjaw 22, a series or wire straightening rolls on the frame extension said frame extension having a bottom which forms a stop, a normally horizontal arm 24 pivotally secured to the frame extension and having a bent inner end 25 under the frame extension and bifurcated end 26 and a grooved pulley 27 rotatably secured in the bifurcated end 26,

all for the purpose as described.

In testimony whereof. we have signed our names to this specification.

ALBERT ABBE GRISIVOLD. ALVIN CARROLL GODDARD. 

